| 摘要 |
A new snap-acting surgical lancet has a spring urging the forward ends of two opposed arms apart. A lower of the two arms carries a downwardly protruding lancing blade. Latching elements on the two arms hold them cocked with their front ends close together, and are releasable to allow the spring to snap the end of the lower arm downward, carrying the blade downward to lance the skin. A stop carried on one arm engages the other arm to limit this snap-apart travel of the arm ends. A single piece of spring material is readily formed to provide all of the foregoing structure, thereby providing a one-piece lancet. |
